Mail Flow issue with Exchange Server installed on Azure VM RRS feed

  • Question

  • Hi, I am setting up an Exchange Hybrid lab in Azure.

    Installation is successful, mail flow works fine internally but External email not working.

    I see this error message in the queue viewer:

    451 4.4.397 Error communicating with the target hosst. 421 4.2.1 Unable to connect -> SocketTimeout: Socket error code 10060

    I have tried using two smarthost (SendGrid and EOP)

    I would appreciate anyone who could from the community

    Sunday, May 31, 2020 12:05 AM

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